3V0-23.25 Exam Dumps - VMware VCAP-Storage Questions and Answers

Disabling the vSAN iSCSI Target Service stops the service that presents iSCSI targets and LUNs to initiators, but it does not automatically delete the targets or LUNs. The vSAN administration guidance states that if an administrator wants to remove vSAN iSCSI objects and reclaim capacity, the LUNs and targets must be deleted manually before or after disabling the service. Therefore, when the service is disabled, the existing targets and LUNs remain in the vSAN datastore but are no longer accessible to the clustered legacy application. This behavior prevents accidental deletion of application or quorum data simply because the service is turned off. The targets are not archived for a fixed retention period, and they are not automatically migrated to another namespace for retention. They are also not deleted automatically. Operationally, administrators should confirm that the legacy application no longer depends on the LUNs before disabling the service or should remove the iSCSI objects through the supported workflow when decommissioning is complete. Reference topics: vSAN iSCSI Target Service, Disable iSCSI Target Service, LUN and Target Lifecycle, vSAN Object Retention.

When vertically scaling a vSAN ESA cluster, adding the same model and capacity drives helps preserve a balanced and predictable cluster design. vSAN works best when hosts use uniform storage configurations. The guidance states that unbalanced host configurations reduce predictability of storage performance because vSAN does not store the same number of components on each host, can introduce different maintenance procedures, and can reduce performance on hosts with smaller or different device types. In ESA, each storage device contributes both capacity and performance through the storage pool model, so mixing device models, endurance classes, or capacities can create uneven consumption and inconsistent backend behavior. Using the same drive model and capacity across hosts improves capacity symmetry, keeps maintenance and replacement procedures consistent, and makes performance planning more predictable. The cache-drive option is incorrect because ESA is single-tier and does not use separate cache and capacity tiers. Equal cache and capacity tiers apply to OSA-style thinking, not ESA. vSAN File Services being configured does not drive the requirement to use identical drives. Reference topics: vSAN ESA Storage Pool Design, Balanced and Unbalanced Cluster Configuration, ESA Device Performance, Vertical Scaling.

The user account used by the application.

The Active Directory used by the application.

The password used by the application.

NFSv4.1 with Kerberos requires identity integration through Active Directory and a valid Kerberos-capable user credential. In vSphere, Kerberos authentication for NFS 4.1 uses Active Directory credentials so ESX can authenticate securely when mounting Kerberos-protected NFS datastores. The required inputs are the Active Directory domain, the user account, and the password associated with that account. The storage guide also states that when several ESX hosts access the same NFS 4.1 datastore, all hosts must use the same Active Directory credentials to ensure consistent access. The Organizational Unit is not the required credential element for datastore mounting. The DNS name of a Kerberos server may be resolved through Active Directory and DNS infrastructure, but it is not one of the required configuration values selected here. A “Kerberos Key Management Server” is not part of the vSphere NFSv4.1 Kerberos datastore configuration model. Therefore, the required options are the application’s user account, its Active Directory, and the account password. Reference topics: NFSv4.1 Datastores, Kerberos Authentication, Active Directory Credentials, Kerberos Security for NFS.